Machine for applying adhesive substance to sheets of material



June 3, 1930. A. PETERSON 1,761,230

MACHINE FOR APPLYING ADHESIVE SUBSTANCE TO SHEETS OF MATERIAL Filed Oct.2, 1928 5 Sheets-Sheet l INVENTOR. ALFRED PzTERsoN A TTORNE Y.

Jline 3, 1930. I V A, PETERSON 1,761,230

MACHINE FOR APPLYING ADHESIVE SUBSTANCE TO SHEETS OF MATERIAL Filed Oct.2, 192a s sneaks-sheet 2 INVENTOR. ALFRED PETERSON BY M/xnwmo 8 VoaL ATTORNE Y.

June 3, 1930. A. PETERSQN I 1,761,230

MACHINE FOR APPLYING ADHESIVE SUBSTANCE TO SHEETS OF MATERIAL Filed Oct.2, 1928 3 Sheets-Sheei s III. iubwlllllr /7 I i I I I2 A/ 1 Z O oINVENTOR.

ALFRED PETERSON A TTORNE Y.

a 14 A103 055F 12:

Patented June 3, 1930 PATENT OFFICE ALFRED PETERSON, OF DENVER, COLORADOMACHINE non Arrnrme ADHESIVE sunsrnncn TO SHEETS or MATERIAL Applicationfiled October 2, 1 928. I Serial No. 309,800.

This invention relates to improvements in machines for applying glueto'sheets, such for instance, as those to be applied to books forforming backs and covers thereof and .5 has for an object to provideimprovements in such machines whereby the construction and operationthereof are rendered more simple'and economical whereby the applicationof the glue tosuch sheets will be it accomplished in a more efficientand better regulated manner.

A machine oft-his general class is disclosed in my pending application,Serial No. 249,-

897, but I have in practice discovered that certain changes thereof andimprovements thereon will render thesaid machine more economical, simpleand elticient in construction and operation and I have devised saidchanges and improvements and desire to ob- 2 tain Letters Patentthereon.

An object of the present' invention is to provide for the revolution ofthe gluing wheel at a different rate of speed than the operation of thefeeding device, whereby the gluing wheel shall have a so called drag inapplying the glue to the sheet.

A further object is to provide efficient means for regulating the amountof glue carried on the surface of the gluing wheel, where the samecontacts with. the sheet.

A further object is to provide av set of feeding rollers with shaftsslightly offset with relation; to the'sha-ft of the gluingwheel wherebythe sheet to be glued will-be engaged .35 by the feeding'mechanism andgiven a predetermined speed prior to its contact with the gluing wheel.y

"A further object is theprovision in such a machine of a feedingmechanism positioned 40 as above described and consisting solelythereof, whereby to accomplish simplicity and economy in constructionand operation, as well as,eiiiciencyi r A further object is to providenew and in1- proved means for pressing the sheet, and.

particularlythe edgethereof, onto thegluing wheelfor insuring the properapplicae tion of the glueto the sheet and to the edge thereof.

The foregoing and other objects particularly will more fully appear fromthe following specification as defined in the appended claims andillustrated in the accompanying drawings, wherein like c-haractersofreference indicate corresponding parts throughout, and in which Figure Iis a plan of my improved gluing machine with portions, not essential tothe present description, broken away.

Figure II is a view the same as Fig. I, except that the work table andparts carried thereby, are thrown'back on the hinges, in order todisclose the mechanism beneath the table. A portion of the table isbroken away.

Figure III is a section on line AA of Fig.- I.

Figure IV is a section, partly in elevation, on line B-B of Fig. I. V

Figure V is a detail View, partly in section and partly in elevation,along line,CG of Fig. IV

Figure VI is a detail view, partly in section and partly in elevation,along line DD ofFig. IV. v

The general objects, purposes and methods of operation of machines forapplying glue to sheets to be attached to the backs of books are wellunderstood and thesame arefully set forth in my aforesaid copendingapplication, but the machines heretofore in use and/or invented, havebeen either too large, complicated and expensive to be installed in theordinary printing shop or, if simpler and less expensive have beeninoperative or inefficient, leaving still a need for a simple,

Positioned withinsaid water tank is a glue pot 6, suitably supportedtherein'as by flanges 7 resting upon the upper edges of the tank 2. Theglue pot'is provided with suitable means as loops 8 for lifting thesameout of the water-tank. The glue pot is mounted so lea that one endthereof is lower than the other, as clearly shown at Fig. 3, whereby theglue will run to the forward end. This can be simply accomplished bymaking one end of the glue pot shallower than the other, as clearlyshown at said Fig. III. Supported by the standards 1 is a framework 9,carrying side bars 10. Carried by the framework, acent the sides of thewater tank, are lift bearings 11, in which is mounted shaft 12,carrying, within the glue pot, a gluing wheel 13, preferably ofadjustable construction, disclosed in my said co-pending applicationGears 14 are carried on the ends of the shaft 12 and mesh withtransmission gears 15, which in turn, mesh with gears 16 of lessdiameter than the gears 14 and mounted on the inner ends of shafts 17which shafts are mounted in the side bars as at 18. One of the shafts 17is connected with suitable driving means as worm drive 19, operated fromany suitable source, as motor 20. By this construction it will be notedthat the shaft of the gluing wheel is offset from, and slightly aheadof, the shafts 17 and also that the revolution of the shafts 17 throughthe worm drive 19 will cause the revolution of all of the gears abovedescribed and the gluing wheel, the power being transmitted through thegears and the gluing wheel shaft, all of which will clearly appear fromFig. 11. It will be noted that not only is the shaft 12 of the gluingwheel slightly forward of the shafts 17 but that by reason of thedifference in diameter between the gears 14 and 16, the gluing wheelshaft 12 will revolve more slowly than the shafts 17. Bottom feedrollers 21 are affixed to the shafts 17 and revolve therewith and coactwith the top feed rollers hereinafter described.

Mounted on one shaft 17 near the drive 19, is a sprocket 22, operating achain 23, mounted upon a sprocket 24 on shaft 25 of the conveyingmechanism, rollers 26 being mounted on this shaft and revolvingtherewith and the conveying cords 27 passing around and being operatedby, the rollers 26, in the usual manner, needing no further explanation.

Hinged to the framework as at 28, is the table 29, having a portionthereof cut away,

as at 30, the said portion being over the glue.

pot and surrounding the gluing wheel and its associated parts. A portion31 of the table is also cut away to permitready access to the glueregulating mechanism hereinafter described. The table carries anysuitable side adjusting mechanism generally shownat 32.

' This may be of any suitable construction for adjusting and guiding thesides of the sheets which are fed to the machine and needs no furtherdescription. The top of the feeding mechanism is carried by the table.The mechanism consists of a shaft 33, suitably revolubly mounted as at34 and carrying top feed rolls 35 revoluble with the shaft and mountedthereon at positions directly above the bottom feed rolls 21, the tablebeing cut away at 36 to permit the bottom feed rolls to projecttherethrough to such a height th t the top of the bottom feed rolls willbe substantially on a level with the top of the table and the shaft 33being mounted at such a height that the top feed rolls 35 will contactwith the bottom feed rolls 21 and be revolved thereby so as to drawtherebetwcen and feed forward a sheet of material inserted into the jawsformed by said rolls while the same are revolving.

The gluing wheel 13 )IOjQClJS slightly above the level of the top of thetable, as clearly shown at Fig. IV and there are mounted on shaft 33 forrevolution therewith, two pressure rolls 37, the lower edges of whichproject slightly below the top of the gluing wheel, whereby, when asheet is run through the feeding mechanism, it will pass over the gluingwheel and be depressed thereagainst by the pressure rolls 37. It will benoted that the pressure rolls are adjustably mounted on the shaft 33 asby set screws 38 and the position of the pressure rolls 37 with relationto the gluing wheel, may be thus readily adjusted. These pressurerollers, being on a shaft slightly offset from the shaft of the gluingwheel, engage and depress the edge of the paper as it is fed over thegluing wheel, thus insuring proper pressure of the edge of the paper 011the gluing wheel, in order that the glue may be evenly distributedthereon, clear to the edge of the paper. As the paper passes over thegluing wheel the pressure rollers 37 serve to keep the same properlypressed against the gluing wheel and the difference in speed between therevolution of the gluing wheel and the revolution of the feed rollerscauses the gluing wheel to drag slightly as it applies the glue to thesheet, thus insuring an eflicient and even application and distributionof the glue throughout the area of that portion of the sheet to whichthe glue is to be applied. This dragof the gluing wheel gives anefficiency in the application of the glue which may be compared to theefliciency obtained by the proper use of the painters brush in applyingpaint.

In order to properly regulate the amount of glue on the gluing wheel, Iprovide a regulator having shaft 39, pivotally mounted in any suitablemanner, as at 40, in the upper edges of the glue pot. Projecting fromthe shaft 39, toward the gluing wheel, is a member 41, carrying a blade50, slidably mounted on the member 41, asby bolt and wing nut, indicatedat 51. The blade is projected forwardly from the member 41 sothat thefront edge of the blade comes into close proximity to the periphery ofthe gluing wheel 13 and on the lower side thereof. Projecting in the op-2:; ing the sheets.

posite direction from the shaft 39, is a member 52, having a notch 53 toengage a bolt 54, projecting upwardly from the bottom of the glue pot 6and preferably mounted in a lug 55, wing nut 56 being provided on theupper end thereof, whereby when the wing nut 56 is screwed down, theblade 50 will be brought closer the periphery of gluing wheel 13,thereby scraping from the said periphery a larger quantity of the gluethereon. By this construction the proximity of the blade 50 to theperiphery of'the gluing wheel and consequently the amount of gluecarried by the gluing wheel to the sheet to be glued, can be readilyregulated or adjusted by the wing nut 56 through the orifice 81 in theWork table.

A material table 57 is provided for holding in a convenient position asupply of the sheets to be run through the machine.

In operation, a sheet to be glued is taken from any convenient place, asfrom table 57, placed upon the table 29 and against the guide 32, whichwill be understood to have been properly adjusted, and moved forwardinto the jaws formed by the top and bottom feed rollers 35, and 21,which will engage the sheet and draw it forward over the gluing wheel,which will draggingly apply a strip of glue to the underside thereof,the pressure rollers 37 operating as above described. It will be notedthat the machine is so arranged that no mechanism is required betweenthe gluing wheel and the conveying mechanism for mov- The feed rollersand the gluing wheel are arranged in such proximity to the conveyorcords 27, that the sheet passes directly from the feed mechanism to saidconveyor. Thus additional rollers, operating similar to the feedrollers, belts and other appliances are dispensed with and the machineis thus simplified.

Ready removal of the gluing wheel, the glue pot and ready access to allof the operating parts is provided by the hinging of the table, wherebythe same may be swung back, uncovering all i of the operating parts asshown at Fig. II and further in this connection, it will be noted thatthe gluing wheel and its shaft and the gears 14, maybe readily removedby reason of the provision of the lift bearings 11. The glue pot can bereadily lifted out of the machine by the handles 8. 7

Changes in details of construction of many wheel for depressing thesheet on either side of the wheel and means for causing the periphery ofsaid wheel to move at a different rate of speed than the sheet being fedthereover, whereby said wheel drags the fluid onto said sheet.

2. In an apparatus for applying strips of fluid to sheets, a fluidapplying wheel upon a shaft, top and bottom feed rollers on shafts andforming rolling jaws for engaging and feeding the sheets over the wheel,means carried by the top feed roller shaft and beside the wheel fordepressing the sheet on either side of the wheel the shafts of the feedrollers being slightly offset from the shaft of the wheel whereby toengage each sheet prior to its contact with the wheel.

8. In an apparatus for applying fluid to sheets, a fluid applying wheelupon a shaft, top and bottom feed rollers upon shafts, and pressurerollers upon the top feed roller shaft for depressing the sheet on eachside of the wheel as it passes thereover.

4. In an apparatus for applying strips of fluid to sheets, a fluidapplying wheel upon a shaft, top and bottom feed rollers on shafts,means carried by the top feed roller shaft and beside the wheel fordepressing the sheet on either side of the wheel the shafts of the wheeland of the feed rollers being relative slightly offset and beingrelatively geared for revolution at different speeds whereby the sheetis engaged by the feed rollers and fed over the wheel and the peripheryof the wheel is caused to move at a speed diflerent from that of thesheet fed thereover.

5. In an apparatus for applying fluid to sheets, a fluid applying wheel,top and bottom feed rollers on shaft terminating on either side of saidwheel, and positioned to engage the sheet and feed it over said wheeland pressure rollers aligned with said top feed rollers and on oppositesides of the Wheel for pressing the edge of the sheet against the Wheel.

In testimony whereofI aflix m signature.

ALFRED PE ERSON,

parts of the machine as here disclosed, may be 7 made, as will beapparent to those skilled in the art, but without in any mannerdeparting from the spirit or scope of the appended claims. I

I claim:

1. In an apparatus for applying strips of

